Last week, she served up a snazzy trifecta of rhinestones, gold flakes, and edgy black lacquer. By keeping the shape of her nails short and square, it looks cool and cohesive instead of overwhelmingly glitzy.

Amid rumors that she might be leaving X Factor to focus on her music, Demi proved that she's still 100% on her judging game when she wore this set of silver chevrons on the show. The tiny gemstones are sweet, sophisticated, and make for a pretty on-camera statement.

As for her latest creation? She's upped the ante with pointy talons, teeny pyramid studs, and ultra-lu gold tips. For the star who favors vintage band tees paired with moto jackets and shredded jeans, these daring digits are the ideal accessory for all of her glam rock-inspired ensembles.